Abstract:
Objectives To understand the quality and safety of bottled drinking water available on the market, analyze the existed problems, and provide technical support for the development of effective measures.
Methods The quality of 110 bottled drinking-water samples were determined by and compared with the 2014 and 2003 edition of the hygienic standard of bottled water for drinking.
Results The physical and chemical indicators selected for examination in this study were qualified on the whole. The qualified rates of microbial indicators assessed by both the new and old standards increased from 42.73% to 76.36% respectively, the qualified rates of local products increased from 38.89% to 77.78% respectively. The important indicator bacteria of pseudomonas aeruginosa and E. coli, were not repeatedly appeared in the same sample; and P. aeruginosa and E. coliwhich were not correlated with other microbial indicators, such as the total numbers of colony and total numbers of other fungi.
Conclusions The ways of drinking water polluted by E. coli and P. aeruginosa might be different. The qualified rates of microbial indicators in drinking water assessed by bith the old and new standards were varied greatly. The examination on total numbers of colony still had some value in the control of water quality and safety. The internal quality management should be strengthened in local production enterprises to control the total numbers of colony and handle appropriately about the method for using disinfectants.
下载: